Figure 2. FIGURE 2. The final 2 F[o] – F[c] maps (blue, contoured at 1. 0 ) for G16P in the dephospho-PMM/PGM·G16P complex (a) and phospho-PMM/PGM·G16P complex (b). Electron density for Arg-15 and Arg-20 is also shown for this complex.